...silk has the highest weight to warmth ratio of any fiber natural or synthetic & it offers the best outdoor / indoor & travel comfort. It is a natural insulator that is sustainable and renewable. Thermasilk 100% pure knitted silk is great for travel... it's highly packable, machine washable and fast drying!

Why Thermasilk:

...Simply the best in outdoor / indoor, & travel comfort - versatile, lightweight & warm without the bulk
...Easy care machine washable & fast drying
...Luxurious, Soft and Breathable...highest weight to warmth ratio of any fiber, be it natural or synthetic
...ec2® Qwik-Dri™ Thermoregulation Comfort Technology
...100% Natural Silk - sustainable & renewable